According to a contemporary text, the Edicts of Ashoka, Ashoka converted to Buddhism because he “felt remorse on account of the conquest of Kalinga because, during the subjugation of a previously unconquered country, slaughter, death, and taking away captive of the people necessarily occur.”
Word-of-mouth stories tells that after the war was over and Ashoka saw the destruction he had caused, a woman approached him and said, "Your actions have taken from me my father, husband, and son. Now what will I have left to live for?". Moved by these words, it is said, that he accepted/adopted Buddhism. He vowed to never take life again and became one of the most just ruler India has ever seen.
